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个人信息Personal Information
教授
博士生导师
硕士生导师
性别:男
毕业院校:中国科学院金属研究所
学位:博士
所在单位:材料科学与工程学院
学科:材料物理与化学. 材料学
办公地点:新三束实验室201
联系方式:0411-84706130
电子邮箱:dongxl@dlut.edu.cn
Preparation and Electrochemical properties of Fe-Sn (C) Nanocomposites as Anode for Lithium-ion Batteries
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论文类型:期刊论文
发表时间:2014-05-20
发表刊物:ELECTROCHIMICA ACTA
收录刊物:SCIE、EI、Scopus
卷号:129
页面范围:93-99
ISSN号:0013-4686
关键字:Lithium-ion Battery; Fe-Sn/C Nanocomposites; Arc-discharge method; Cycleability; Anode
摘要:In this work, Fe-Sn nanoparticles and its carbide counterpart, i.e. Fe-Sn/C nanoparticles were fabricated by DC arc-discharge method. The crystal structures, morphologies and cyclic performances of both samples were characterized by XRD, HRTEM and galvanostatic discharge/charge measurements. It is indicated that the main phases in two kinds of nanoparticles are FeSn2 and Sn. The sizes of Fe-Sn nanoparticles are in the range of 30 similar to 100 nm, while Fe-Sn/C nanoparticles are about 10 similar to 50 nm. Fe-Sn nanoparticles electrode exhibits the real discharge/charge specific capacities of 192/159 mAh g(-1), those are gradually faded to near 11 mAh g-1 after 50 cycles. Nevertheless, Fe-Sn/C nanoparticles electrode has the real discharge/charge specific capacities of 557/517 mAh g(-1), can maintain to 373 mAh g(-1) after 50 cycles. The carbon additive in Fe-Sn/C nanoparticles was characterized to be a graphite-like shell, its excellent effects on suppression of the volume change and electrochemical performances were discussed. (c) 2014 Elsevier Ltd. All rights reserved.